In a sense, this is the vision of UBI -- where basic needs were met, and people were free to self-actualize.
This is also the happy version of tenure in academia -- where you didn't have to worry about "publish or perish" but instead you get to work on really important ideas without showing results for years (multi year grants or being in a place like the IAS helps).
Google in some ways used to operate like this before the current pivot -- many googlers lived a life of "resting and vesting" while wandering about for years looking for a big idea with little pressure to deliver anything.
I definitely found this vision attractive, but as I grew older, I realized that it was not entirely tenable in it purest form. Yes, the best ideas certain came from having time to wander and work on different things (you get more creative working on multiple decorrelated ideas at the same time rather than one big idea), but in my experience, complete idleness without pressure to deliver anything does not work. I don't know if I believe the premise of In Praise of Idleness any more. We no longer live in a simple world. In a complex world, great ideas come from incrementalism, and keeping busy and making progress seems to be necessary in many domains in order get to the big idea because all the low hanging fruit have been plucked.